Hey guys,

Attached is the Linux executable, along with the same sample input files 
I sent before (Stations.txt, the .geo file, and Delta_poly.ply). I also 
wrote up a short report documenting everything, which is attached as well.

Please try out the program and let me know if it works correctly or if 
anything is unclear.

Steve

And here is the program (Windows executable) I used to make them.

The program input files are:
(1) A polygon file, which must be named "Delta_poly.ply" in the Stanford 
polygon file format.
(2) A text file listing the locations of the stations used for 
interpolation (in UTM Zone 10 Easting and Northing), which must be named 
"Stations.txt". The first line of this file needs to have the number of 
stations contained in the file. Any characters in the file past column 
29 are ignored by the program. I have the three letter CDEC station 
names in there just as an example.
(3) The .geo file "Delta_34North_SWA3_ro.geo". This file contains all 
the information about the points in our Delta grid. You shouldn't have 
to change or do anything with it. It's just a big file that's necessary 
for the program and was too hard to incorporate into the executable.

The output files are:
(1) A polygon weighting file. Each row in this file gives the weights 
for each polygon. The first column file is the polygon number. (This is 
simply the number of the polygon in the order in which it was given in 
the .ply file.)  The weights are then given left to right for stations 1 
through N, in the order they were listed in the Stations.txt file. The 
last number is for error checking. It is the number of grid points for 
our grid that fall within each of your polygons. Some of the larger 
polygons have hundreds of points within them. Smaller ones may have very 
few. If one of the weights looks far off, the number of points may help 
explain why. Otherwise you can probably just ignore it.
(2) A .log file that I was using for error checking. You can also ignore 
this.

Let me know if this is working for you. I will attempt to compile a 
Linux executable tomorrow morning. I'll send it your way as soon as I 
get done with it. Unfortunately, we don't have a Fortran license for 
OSX, so I won't be able to give you a Mac version. I hope this isn't a 
huge problem. Can you run it with a Windows emulator?

Steve